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Yes to self expanding foam. Great stuff! But (for @mpayne or anyone flying both ways), you'll need to get it home, too, right? So you'll need a box on the other end. Also the expanding foam (or regular foam, tape, etc). That argues for making a reservation at the same hotel on arrival and...

Interesting idea. These bikes take a lot of bending forces between the bars and the pedals. My observation has been that flex comes from every long tube and every joint. By bringing the boom up to the bars you've reduced one limb of that. But there's that shim joint. A definite source of...

Beautiful workmanship on a highly personal bike. I wonder about how close the front wheel is to the chain ... looks like they could easily conflict. Also those're some pretty narrow trails for 2-way traffic including peds. But definitely a special vision. Thanks for showing it.

Well, comfort is a totally personal thing, but to me your arms look much too far back. Your elbows are behind your shoulders/spine! ymmv of course, but to my taste that looks awkward as hell, considering the essential role the arms take on a CB. You're gonna need to use your arms a lot and in...

@Bikes&Banjos Check out this history, also the links at the bottom of the page. Before he sold his interest in CB to the Parker's (2014?) John Tolhurst frequently dispensed wisdom in this forum. You can probably find his old posts here. https://cruzbiking.com.au/threetwoone/ Also...

Actually, if you tried it you'd find that it's surprisingly easy and comfortable for cruising along. No circus trick. Plenty of hints here about how to learn it. Not such a big deal (start gradually by loosening your grip; see advice). To me it was part of feeling like I really controlled the...

Yes, considerable discussing on these points. Your mod should indeed help. See some earlier posts: Quest frame flex tested" (http://cruzbike.com/forum/threads/quest-frame-flex-tested.7794/) Also look for posts about the "emeljay mod" for a more radical (but doable) approach: "Qx100 steering mod".

Hmmm. The leg force vector is c: exactly forward. Are you saying that needs modification? Perhaps it does, but I am simplifying things to make this fit in a 2-d diagram (and 2-d-thinking brain). Other complications are whether the steering axis is exactly at the handlebars (as @Henri mentions...

We've been having a long discussion in the thread "Are you a pusher or a puller?". A whole lotta words got slung around (including mine), without seeming to shed much light. The thread filled up with chatter about various ways the alternating pedal pushes get balanced. It didn't ring true to...

I am often enough wrong, and don't mind being corrected. But I think @Henri and @JerseyJim are talking about something entirely different than gaining extra power by using your arms/hands/upper body (the big selling point of Cruzbike, and the reason these bikes are better climbers than other...

I don’t think this works. You can counter pedal steer by pushing rhythmically on the handlebars, but that's a minor part of it. (And it feels weird; I've tried it as part of learning this bike years ago). We're talking about getting more power on a CB by using the arms. If you push on the...

Remarkably, and possibly for the first time, I disagree with @benphyr ... Sure, the largest force is exerted by the feet, but I don't think that's what we mean by "pushing". What other way is there to make the bike go? The relevant distinction between pushing and pulling is really the...

Lots of tips here with some searching. Find a quiet road or large parking lot. Try first just holding a looser grip, then gradually loosen until your hands are more or less just resting on the bars. Keep a steady pedaling rhythm. I found it easier to learn going up a slight incline to force me...

To me, it's like a rowing machine motion: pushing with the feet while pulling with the hands. The counteracting pulls @benphyr mentions come naturally while doing this. This is the classic CB "full body" action and advantage. It's a very strong motion and it's why we're faster. Thus when...

It's pretty easy to make this part even without a 3-d printer. I made mine long ago from a strip of 1/8-inch aluminum bent in a vice, then three holes drilled. I use my printer a lot, but aluminum is stronger and not much heavier. For simple shapes and bends the old-fashioned way is often...

Ok, that's interesting. I'm surprised it could be as much as a cm, but I see the problem. Too bad, since the offset joints would let you easily de-tension when needed, but as you say, only if the length was right. So why do you want to trade? As you can see from the pic, my 1st-year Q has QR...

I'm trying to understand what the issue is here. Below are 2 photos of the front triangles of a) my long-since-sold Quest 559, showing the unusual offset joints at either end of the chainstay b) my present 1st generation Q45 (2018), showing the chainstay joints are the BB and the wheel axle...

Fyi, the dual chamber model is Kind A5 RR1

See my post on this exact same question yesterday in the thread "Making my QX100 lighter and faster" (something like that) Like @benphyr said, very reliable.

Yup. I used a 125mm Kind shock for 3 years on my Quest 559, then a 165mm version for almost 3 years now on my Q45. They hold air for many months, no failures. Roughly 10k miles. And yes, they are far lighter. You'll be amazed when you're making the swap and hold the two in your hand. But more...